In everyday life, as in production, sometimes it is necessary to convert the volumes of liquid into kilograms. What calculations are needed for this? Maybe there are certain devices for translating some physical units into others?
It is necessary
table of substance density
Instructions
Step 1
There is an opinion that the weight of any liquid substance, the volume of which is equal to one liter, corresponds to one kilogram. However, in order to check this delusion, it is enough to recall one simple formula from the course of school physics: m = p * V, where m is the mass of the substance taken, p is its density, V is the volume. This formula clearly displays the direct dependence of the weight of a substance not only on its volume, but also on its density. Therefore, it is impossible to convert the volume of a substance into weight, more precisely - liters into kilograms, since these are completely different physical units of measurement. But it is possible to find out what mass of a substance fills a given volume.
Step 2
To convert liters of milk to kilograms, find out its density. According to various sources, the density of milk varies depending on the content in its composition of water, fat, dry skimmed milk residue from 1027 to 1032 kg / m³.
Step 3
To get the average density, add both values and divide the resulting number by two. The average density of milk will be equal to 1029, 5 kg / m³. Convert a liter of milk into cubic meters (tabular data: 1 liter = 0, 001 m³).
Step 4
When you substitute the given values p = 1029.5 kg / m³ and V = 0, 001 m³ into the formula: m = p * V (m = 1029, 5 kg / m³ * 0, 001 m³), you get m = 1, 0295 kg …
This means that one liter contains 1.0295 kg of milk.
